General characteristics of aluminum: aluminum and aluminum alloy with unique physical and chemical properties. It was a silver-gray appearance, density, small resistivity, linear expansion coefficient. Because aluminum is face-centered cubic structure, no change allotrope aluminum square tube, no "extension - brittle" change, which has excellent low-temperature toughness at low temperatures to maintain good mechanical properties. In addition, Shandong Aluminum square tube supply manufacturers, aluminum and aluminum alloy also has excellent corrosion resistance and high specific strength (strength / density), have good heat and light reflectivity. No grinding sparks and non-magnetic. High-frequency power supply requirements for the technical difficulty of aluminum welding process Jinan aluminum square tube manufacturers, ① use higher frequencies, making the weld heat affected zone and the inner wall of the narrow current decreases. ② power density requirements of the weld, welding speed, the faster, the better weld quality. ③ tube anode DC voltage requirements stable and smooth, its ripple factor requirement of around 1%. Jinan aluminum square tube supply manufacturers, rolls aluminum, aluminum square tube is provided by Jinan Heshun Aluminium Limited. Jinan Heshun Aluminum Co. (www.jnhsly.com) Shandong Jinan, aluminum products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Aluminum leadership in cis with the staff warmly welcome all inquiries negotiations to create a better future for aluminum rolls.